Comparison of Kawasaki KX450F 2008 and Yamaha WR 450 F 2007

Attribute	Yamaha WR 450 F 2007 ×	Kawasaki KX450F 2008 ×
General
Production from (year)	2007	2008
Make	Yamaha	Kawasaki
Model	Yamaha WR 450 F	Kawasaki KX450F
Category	Enduro / offroad	Cross / motocross
Engine and transmission
Engine type	Single cylinder, four-stroke	Single cylinder, four-stroke
Valves per cylinder	-	4
Fuel system	-	Carburettor. Keihin FCR40
Displacement (cm³)	449	449
Cooling system	Liquid	Air
Transmission type,final drive	Chain	Chain
Torque (Nm)	-	40
Bore (mm)	95	96
Stroke (mm)	63.4	62.1
Gearbox	5-speed	5-speed
Fuel control	Double Overhead Cams/Twin Cam (DOHC)	Double Overhead Cams/Twin Cam (DOHC)
Ignition	CDI	Multi-map digital CDI with throttle position sensor (K-TRIC)
Compression	12.3:1	12.0:1
Chassis
Front suspension	Telescopic Fork, Coil spring/oil damper, 11.8´	48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.
Rear suspension	Swingarm (link, suspension), Coil spring/gas-oil damper, 12.0´	UNI-TRAK® linkage system with 22-position low-speed and variable high-speed compression dampening
Front brakes	Single disc	Single disc
Rear brakes	Single disc	Single disc
Diameter (mm)	245	240
Frame type	-	Aluminum perimeter
Front tyre	80/80-M21	90/70-21
Rear tyre	110/90-M18	120/80-19
Rake (fork angle) (degree)	-	27.1
Other
Color options	-	lime green
Dimensions
Wheelbase (mm)	1,486	1,486
Dry weight (kg)	112	99
Overall height (mm)	1,295	1,280
Overall length (mm)	2,174	2,184
Overall width (mm)	826	820
Seat height (mm)	978	965
Ground clearance (mm)	366	345
Performance
Fuel capacity (l)	7.94	7.19